Improvement in methods of re-enforcing metallic cartridge-heads



2 Sheets- SheeL 1L STEPHEN W. WOOD. improvement in Method of ReinforcingMetallic Cartridge-Shells. N 0.

Patented May 7,1872.

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l mpgoy ement in Method of i Reinforcing Metallic Cartridge-Shells. fNOE 126 613. Patentd May 7,1872.

i i Q Swkx w \W UNITED STATES STEPHEN W. WOOD, or CORNWALL, NEW YORK.

IMPROVEMENT IN METHODS OF RE-ENFORCING METALLIC CARTRIDGE-HEADS.

Specification forming part of Letters Patent No. 126,613, dated May 7,1872.

To all whom it may concern:

Be it known that I, STEPHEN W. Wool), of Cornwall, in the county ofOrange and State of New York, have invented an Improvement inRe-enforcing Metallic Cartridges; and I do hereby declare that thefollowing is a full and exact description thereof, reference being hadto the accompanying drawing making part of this specification- Figure 1being a section representing an arrangement of die and punches forre-enforcing cartridges by my improved method as the beginning of themovement or process; Fig. 2, the arrangement of the die and punches atthe close of the movement, the cartridge being shown re-enforced; Fig.3, a separate view of the cartridge, in section, re-enforced; Fig. 4, asection, showing a modified form and arrangement of the die and punchesas at the beginning of the movement of re-enforcin g; Fig. 5, a section,showing a similar form of die and punches, but indicating a somewhatdifferent mode of operating them to perform the work; Fig. 6, a section,showing the die and punches according to the method of operation as inFig. 5, but indicating the position thereof after the completion of theoperation of reenforcing the cartridge; Fig. 7, a separate view, insection, of the cartridge re-enforced by the last method; Fig. 8, aview, in section, of a cartridge before being subjected to the processof re-enforcin g invented by me.

Like letters designate corresponding parts in all the figures.

The nature of my invention consists in reenforcing metallic cartridgesby forcing metal from the sides thereof, and compressing or upsetting itinto the head or base, thereby thickening the same to the extentrequired.

There may be various ways of effecting this mode of re-enforcingcartridges.

In the accompanying drawing are represented several arrangements of dieand punches forthepurpose, which I will proceed to describe insuccession.

In Figs. 1 and 2 an arrangement of a die, B, and punches G C for simplyre-enforcing acartridge, is shown, which will properly illustrate thegeneral principle. The die B has, in one end, an aperture, a, which justadmits a cartridge, w, of ordinary form, without a flange, indicated inFig. 8, but made somewhat longer than the re-enforced cartridge isrequired t) be. At the bottom of this aperture is a shoulder, d, havinga width about equal to the thickness of the shell of the cartridge; andthence an aperture, f, having the diameter of the interior of thecartridge is continued through the die. The punch Ofits the largeraperture a of the die, and its inner end b is of the proper shape todetermine the form of the head required for the re-enforced cartridge.The punch O fits the smaller aperture f and the interior of thecartridge x, and its inner end c has a form corresponding with the innerend I) of the punch C.

The cartridge .10 to be re-enforced is first placed in the aperture a ofthe die, its open end abutting against the shoulder d, as indicated inFig. 1. The punches are then brought into position, as shown in the samefigure, the punch O in contact with the head of the cartridge, and thepunch 0 not quite in contact with or reaching the head thereof on theinside, so that there may be room to receive the metal between thepunches as it is forced from the contiguous part of the sides of thecartridge by the first movement of the punch O inward. Then, as thepunch G is driven further into the die, the punch G recedes therefromsomewhat faster than the punch G enters, so that the space between thetwo gradually enlarges to afl'ord room for the continual augmentation ofmetal from the sides of the cartridge compressed into the head till, atthe completion of the operation, the head is re-enforced to the extentrequired, as indicated in Fig. 2, the cartridge by itself being shown asin Fig. 3. The punch C is then withdrawn from the die, and there-enforced cartridge driven out by a forward movement of the punch O,or otherwise, as most convenient; another cartridge is inserted and thepunches returned to the position shown in Fig. 1. All the movements ofthe punches are produced by cams or other mechanism, well understood bythose skilled in the art.

In Fig. 4 the die B, in addition to the aperture a for the reception ofthe cartridge, and the aperture f for the punch O, has an aperture, g,still larger than the aperture a, equal to the diameter of the rim orflange, which is generally formed on the heads of cartridges, and thepunch G fits this enlarged aperture.

After the punches are brought into position, as shown, the punch C isfirst forced inward, while the punch C remains stationary till the headof the cartridge is shaped, as indicated by the inner end I) e of thepunches. Then, as the punch C continues further inward, the punch Urecedes somewhat faster than the other punch advances, as in the formercase, but not proportionally so much faster, so that a part of the metalfrom the sides of the cartridge may be forced outward to form the flangeor rim of the cartridge, till at last the flange or rim is compressedand shaped between the punch U and shoulder h at the bottom of theaperture g.

In Fig. 5 a flanged cartridge is also made, as in Fig. 4, and theoperation difi'ers only in the relative movements of the punches, thepunch 0 remaining in one position, as shown, while the punch O is forcedinward to form the flange, and wholly or partially re-enforce thecartridge. But in the completion of the re-enforcement the punch C mayrecede somewhat to the position shown in Fig. 6. The complete cartridgeis represented in Fig. 7.

What I claim as my invention, and desire to secure by Letters Patent, is

The method herein described and shown of re-enforcing the heads ofcartridge-shells made of metal of uniform thickness.

STEPHEN W. WOOD.

Witnesses:

J. S. BROWN, E. M. GALLAHER.

